java通过反射对任何对象的属性值进行处理

港控/mmm° 2022-10-17 05:29 169阅读 0赞

# 1、代码实现 #

import com.alibaba.fastjson.JSON;
    import lombok.extern.slf4j.Slf4j;
    import org.apache.commons.collections4.CollectionUtils;
    import org.apache.commons.lang3.reflect.FieldUtils;
    
    import java.lang.reflect.Field;
    import java.util.HashSet;
    import java.util.Set;
    
    @Slf4j
    public class HandleBeanFiledUtil {
    
    
        public static <T> T handleFiledWithStar(T obj, Set<String> filedNameSet) {
            if (CollectionUtils.isEmpty(filedNameSet)) {
                return obj;
            }
            Class<?> clz = obj.getClass();
            Field[] fields = clz.getDeclaredFields();
    
            try {
                for (Field field : fields) {
                    String fieldName = field.getName();
                    if (!filedNameSet.contains(fieldName)) {
                        continue;
                    }
                    Object val = FieldUtils.readField(field, obj, true);
                    if (val instanceof String) {
                        String content = (String) val;
                        if (content.contains("*")) {
                            FieldUtils.writeField(field, obj, null, true);
                        }
                    }
                }
            } catch (Exception e) {
                log.error("对象属性加密失败", e);
            }
    
            return obj;
        }
    
        public static void main(String[] args) {
            TestVO vo = new TestVO();
            Set<String> set = new HashSet<>();
            set.add("name");
            set.add("age");
            TestVO obj = handleFiledWithStar(vo, set);
            System.out.println(JSON.toJSONString(vo));
            System.out.println(JSON.toJSONString(obj));
    
        }
    
    }

# 2、vo类 #

import lombok.Data;
    
    @Data
    public class TestVO {
    
        private String name = "张**三";
    
        private String age = "12";
    }

# 3、控制台打印结果 #

{"age":"12"}
    {"age":"12"}